yr10 rev cards term2

Question	Answer
what is the calculation for bitmap graphic	size of graphic = rows x columns x colour depth
how to store audio	To store audio, the amplitude (height) of an analogue waveform is sampled (measured) at regular intervals
what is the sample rate	The number of samples per second is called the sample rate
what will happen when you reduce the sample interval	Reducing the sample interval will increase the sample rate, producing better sound, but requiring more data
How can file size be calculated	File Size = sample rate × bit depth × duration in seconds
An audio recording is sampled at 22050 Hz using a bit depth of 32 bit. How many bits would be required to record for 5 seconds?	3,528,000
how do you convert to larger bit units?	To convert an amount of bits to larger units: Divide by 8 to get bytes Divide by 1024 to get kibibytes Divide by 1024 again to get mebibytes Divide by 1024 again to get gibibytes Divide by 1024 again to get tebibytes
How do you convert binary to hexidecimal and hexidecimal to binary	Image: Capture (binary/octet-stream)
what does a arithmetic logic unit do?	Performs mathematical and logical operations
What is clock speed?	The clock speed of the CPU is how many instructions the computer can execute per second Clock speed is measured in hertz (Hz)

Resource summary

	Created by James Harvey over 1 year ago